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- This session presents the modeling and analysis of Soil–Structure Interaction for Integral Bridges using MIDAS GTS NX, focusing on the unique challenges of jointless bridge design where the superstructure is rigidly connected to the substructure.
- Practical guidance is provided on capturing cyclic thermal and traffic-induced soil pressures, and how these interactions influence foundation and abutment design in real engineering projects.
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Description
In this session, Rohith Swaminathan from MIDAS IT Europe explores the unique complexities of Soil–Structure Interaction as applied to Integral Bridge design. Unlike conventional bridges with expansion joints, integral bridges feature a rigid connection between the deck and the abutments, making the soil response a critical driver of structural behavior.
The session covers the fundamental principles of integral bridge systems and demonstrates how MIDAS GTS NX can be used to accurately model the soil-abutment-deck interaction under a range of load conditions, including cyclic thermal movements and live traffic loads.
Participants will learn how to properly set up boundary conditions, apply earth pressure models, and interpret displacement and stress results in the context of abutment and pile foundation design. The session draws on practical project experience to highlight common modeling pitfalls and how to resolve them efficiently.
Key Points
Fundamentals of Integral Bridge systems and why SSI plays a critical role in design compared to conventional jointed bridges
Step-by-step setup of SSI models in MIDAS GTS NX including boundary conditions, soil constitutive models, and interaction elements
Modeling cyclic thermal expansion and traffic-induced loading effects on abutment soil pressure and pile behavior
Practical tips for interpreting results and avoiding common modeling errors in integral bridge SSI analysis
Benefit
Issued upon session completion
PDF & Practice Files
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